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How To Install A Dual Exhaust System



Dual Exhaust System Donut
Use a steel donut gasket for best results at the exhaust manifold. Steel wedges itself into the manifold and pipe for exceptional sealing, and it resists extreme heat better than asbestos-style gaskets. It won't blow out.		 Dual Exhaust System Manifolds
As you can see, one of our Hi-Po manifolds suffered from a bad exhaust leak at the custom H-pipe. You don't have to worry about that with the Turbo dual exhaust system. It fits and seals properly.		 Dual Exhaust System Fitment
You never know what you're going to encounter on older Mustangs. We ran into fitment issues when the righthand H-pipe was off by an inch. At first, we thought we would have to return it or visit a muffler shop. However, Brant put us in touch with the manufacturer, who suggested we bend the pipe ourselves. We placed one side under our left foot and pulled up on the right side. It was an easy fix for a perfect fit.
Dual Exhaust System Jackstand
Support the H-pipe with a jackstand and snug the manifold stud nuts, but don't tighten them yet.		 Dual Exhaust System Position
Exhaust pipes are tricky to fit because you must position them to clear the floorpan and driveshaft. Fit each loosely, and rotate the pipe until ideal clearance is achieved. Examine the angle at the muffler end to make sure it's square.		 Dual Exhaust System Clearance
This is how an exhaust pipe installation should look when loosely fitted. You want at least 1 inch of clearance from the floor and driveshaft. Keep in mind that the shaft moves up and down with the rear axle as you drive.
Dual Exhaust System Hammer
Once you're confident of pipe fitment, gently drive the exhaust pipes into the H-pipe. Don't do like us-use a block of wood between the hammer and pipe to prevent distortion.		 Dual Exhaust System Offset
For '65-'66, this is how muffler fitment looks, with the center in and offset out. We're not certain why Ford did it this way considering the improved clearances when mufflers are fit offset in and centered out, but this is correct for those years. The Turbo dual exhaust system is designed this way for '65-'70 Mustang owners who want true dual exhausts.		 Dual Exhaust System Proper Fit
Before tightening anything, check the exhaust system for proper fit. The 1-inch clearance allows room for the worst possible scenario: bottoming out in a dip and bumpy roads, among other things. Take vehicle weight off the rear axle and check your clearances again. Few things are more annoying than a driveshaft chaffing your mufflers or rear axle striking the tailpipes.
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Dual Exhaust System Dual Dual Exhaust System Bolt On Dual Exhaust System Brackets
Dual Exhaust System Pipes

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